Great Purple Hairstreak, Atlides halesus <LEP44>
Its other name, Great Blue Hairstreak, may be more suitable. The upperside is the deepest, most brilliant iridescent blue, on the body as well as the wings. A black border SKETCHs the wings and greenish reflections may show, especially in the spots near the long tails. Our largest hairstreak. Its caterpillars feed on mistletoe, parasites of oak trees.